Abstract: A watercraft has first and second jet propulsion units. The first jet propulsion unit includes a first inlet, a first outlet, a second outlet, and a first valve. The second jet propulsion unit includes a second inlet, a third outlet, a fourth outlet, and a second valve. The watercraft also includes first and second discharge ports disposed on opposite sides of a longitudinal centerline, a first pipe fluidly communicating the first discharge port with the second outlet, a second pipe fluidly communicating the second discharge port with the second outlet, third and a fourth discharge ports disposed on opposite sides of the longitudinal centerline, a third pipe fluidly communicating the third discharge port with the fourth outlet, and a fourth pipe fluidly communicating the fourth discharge port with the fourth outlet.

Abstract: A system and method to level-shift multiple signals from a first voltage domain to a second voltage domain with minimized silicon area. A level-shifting system may be organized by implementing a static level-shifter coupled to a plurality of dynamic level-shifters. The static level-shifter may provide a voltage control signal for each of the dynamic level-shifters. Each of the dynamic level-shifters may level-shift an individual input signal from a first voltage domain to a second voltage domain.

Abstract: A watercraft has first and second jet propulsion units. The first jet propulsion unit includes a first inlet, a first outlet, a second outlet, and a first valve. The second jet propulsion unit includes a second inlet, a third outlet, a fourth outlet, and a second valve. The watercraft also includes first and second discharge ports disposed on opposite sides of a longitudinal centerline, a first pipe fluidly communicating the first discharge port with the second outlet, a second pipe fluidly communicating the second discharge port with the second outlet, third and a fourth discharge ports disposed on opposite sides of the longitudinal centerline, a third pipe fluidly communicating the third discharge port with the fourth outlet, and a fourth pipe fluidly communicating the fourth discharge port with the fourth outlet.

Abstract: The invention is directed to a protection circuit for protecting IC chips against ESD. An ESD protection circuit for an integrated circuit chip may comprise an isolated NMOS transistor, which may comprise an isolation region isolating a backgate from a substrate, and a first and second doped regions and a gate formed on the backgate. The ESD protection circuit may further comprise a first terminal to connect the isolation region to a first electrical node, and a second terminal to connect the second doped region to a second electrical node. The first electrical node may have a higher voltage level than the second electrical node, and the gate and backgate may be coupled to the second terminal.

Abstract: The present invention relates to a semiconductor device including a substrate layer, a metal-oxide-semiconductor field-effect transistor (MOSFET), a backgate region, an isolation layer and a diode. The MOSFET includes a gate region, a source region and a drain region. The source and drain regions are embedded in the backgate region, which includes a voltage input terminal. The isolation layer is located between the backgate region and the substrate layer and has a doping type opposite that of the backgate region. The diode includes a first terminal connected to the isolation layer and a second terminal coupled to an isolation voltage source.

Abstract: The invention is directed to a protection circuit for protecting IC chips against ESD. An ESD protection circuit for an integrated circuit chip may comprise an isolated NMOS transistor, which may comprise an isolation region isolating a backgate from a substrate, and a first and second doped regions and a gate formed on the backgate. The ESD protection circuit may further comprise a first terminal to connect the isolation region to a first electrical node, and a second terminal to connect the second doped region to a second electrical node. The first electrical node may have a higher voltage level than the second electrical node, and the gate and backgate may be coupled to the second terminal.

Abstract: The present invention relates to a semiconductor device including a substrate layer, a metal-oxide-semiconductor field-effect transistor (MOSFET), a backgate region, an isolation layer and a diode. The MOSFET includes a gate region, a source region and a drain region. The source and drain regions are embedded in the backgate region, which includes a voltage input terminal. The isolation layer is located between the backgate region and the substrate layer and has a doping type opposite that of the backgate region. The diode includes a first terminal connected to the isolation layer and a second terminal coupled to an isolation voltage source.

Abstract: A compact arrangement which enables rotation of a component of an apparatus to be sensed is provided. A component having a body with a plurality of discrete magnetised regions on its circumferentially outer surface, each region being formed in a layer and circumferentially spaced apart from each other by non-magnetised regions of the layer, the magnetised regions being circumferentially distributed at substantially the same axial position to enable rotation of the component relative to a sensor to be monitored, wherein the magnetised regions comprise a first group of equally spaced magnetised regions, each of which is magnetised in the same direction, and an additional magnetised region midway between two of the first group of regions, which has a different magnitude of magnetization to the regions of the first group to facilitate monitoring of the rotational position of the body.

Abstract: The present invention relates to a method and apparatus for alignment of two mechanical parts. An inventive measuring device has a housing comprising a light source and a detector for detection of light beams. The light source is capable of transmitting a light beam modulated according to a modulation scheme for information transmission. The output of said detector is connected to an interpreter arranged to demodulate a detected light beam and to a signal conditioner arranged to extract the position of impingement of a detected light beam on the detector surface.

Abstract: A state machine circuit may be used to control a multiplexing circuit that selects and provides respective ones of multiple input clock signals to a clock-synthesizing circuit that generates a synthesized clock signal in response to such input clock signals. The state machine circuit may, for example, be configured so that the synthesized clock signal is a spread-spectrum clock signal and/or a clock signal having a nominal frequency that is greater than a nominal frequency of each of the input clock signals.

Abstract: A compact arrangement which enables rotation of a component (4) of an apparatus to be sensed is provided. A component adapted for use in such an arrangement comprises a body having an axis of rotation (6) and a plurality of discrete magnetised regions (8) thereon, each formed in a layer of material (12) on the surface of the body, the magnetised regions being circumferentially distributed at substantially the same axial position to enable rotation of the component relative to a sensor (20, 20?) to be monitored. Methods for manufacturing a suitable component are also described. The arrangement disclosed enables the rotational position of component, such as a shaft for example, to be sensed using a Hall effect sensor, and a component may be modified in accordance with the invention without substantially increasing its volume.

Abstract: The present invention relates to a method and apparatus for alignment of two mechanical parts. An inventive measuring device has a housing comprising a light source and a detector for detection of light beams. The light source is capable of transmitting a light beam modulated according to a modulation scheme for information transmission. The output of said detector is connected to an interpreter arranged to demodulate a detected light beam and to a signal conditioner arranged to extract the position of impingement of a detected light beam on the detector surface.

Abstract: Method and device for ascertaining the spacing of the center line of curvature of a concave body surface 3a and 5a, which is curved in the shape of a conical envelope, in particular the spacing of the longitudinal center line of a turbine rotor bearing or the central opening in the rim of a turbine impeller wheel from a reference axis. A sharply focussed light beam L, which presets the reference axis, is emitted by a light beam transmitter 6 through the measurement space which faces the body surface 3a and 5a to be measured. This light beam impinges on the measurement field of a photo-electronic position detector rigidly fastened at a sensing device 7. The sensing device 7 is supported in stable manner and displaceably on the body surface 3a and 5a to be measured and is rotated about the center line of curvature of the body surface through displacement of its supported end in the direction of curvature on the body surface.